Volumetric flowrate of dry gas measured at separator
Usually produced from subsurface gas phase and oil phase
For volatile oil fluid model the gas surface flowrate q_G is related to gas sandface flowrate q_g and oil sandface flowrate q_o as (see derivation):
(1) | q_G =(1-R_v \, R_s)^{-1} \left( \frac{q_g}{B_g} +\frac{R_s \, q_o}{B_o} \right) |
where
B_o, B_g | oil formation volume factor between separator and sandface pressure/temperature conditions |
R_s | Solution GOR at sandface pressure/temperature conditions |
It relates to Liquid production rate at surface as:
(2) | q_G = GOR \cdot (1-Y_w) \, q_L |
It simplifies for the Black Oil model to:
(3) | q_G = \frac{q_g}{B_g} |
See Also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing (WT) / Flowrate Testing / Flowrate
[ Well & Reservoir Surveillance ]
[ Sandface flowrates ] [ Oil sandface flowrate ] [ Gas sandface flowrate ] [ Water sandface flowrate ]
[ Surface flowrates ] [ Oil surface flowrate ] [ Gas surface flowrate ] [ Water surface flowrate ]